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added ipc_gid for direct plugins

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This commit is contained in:
Jaroslav Kysela 2005-05-30 10:13:54 +00:00
parent d7ef50f5ee
commit 4b7e3cff81
5 changed files with 107 additions and 8 deletions
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15
src/pcm/pcm_direct.c
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@ -50,10 +50,21 @@
int snd_pcm_direct_semaphore_create_or_connect(snd_pcm_direct_t *dmix)
{
struct shmid_ds buf;
dmix->semid = semget(dmix->ipc_key, DIRECT_IPC_SEMS,
IPC_CREAT | dmix->ipc_perm);
if (dmix->semid < 0)
return -errno;
if (dmix->ipc_gid < 0)
return 0;
if (shmctl(dmix->semid, IPC_STAT, &buf) < 0) {
int err = -errno;
snd_pcm_direct_semaphore_discard(dmix);
return err;
}
buf.shm_perm.gid = dmix->ipc_gid;
shmctl(dmix->semid, IPC_SET, &buf);
return 0;
}
@ -120,6 +131,10 @@ retryget:
}
if (buf.shm_nattch == 1) { /* we're the first user, clear the segment */
memset(dmix->shmptr, 0, sizeof(snd_pcm_direct_share_t));
if (dmix->ipc_gid >= 0) {
buf.shm_perm.gid = dmix->ipc_gid;
shmctl(dmix->shmid, IPC_SET, &buf);
}
return 1;
}
return 0;